I have both. The BigIR has has 48 radials and is a good performer.
The hex beam is a GREAT antenna. It routinely receives about 2 s units better than the BigIR and is far quieter.
The only reason I have not sold the Steppir is 40 meters and I use 40 so seldom that it is hard to justify it but 40 may well be the only choice again in a few years
I only have occasional strong wind at mh QTH but the hex beam will take anything the North Carolina climate can throw at it.
As of tonight I have worked 250 countries - over 200 of them with the hex beam.